Fix test testLoadFixturesFilesWithPurgeModeTruncate

tests/Test/ConfigSqliteTest.php

@@ -371,8 +371,20 @@ public function testLoadNonexistentFixturesFiles(): void
      */
     public function testLoadFixturesFilesWithPurgeModeTruncate(): void
     {
+        // Load initial fixtures
+        $this->testLoadFixturesFiles();
+
+        $users = $this->userRepository->findAll();
+
+        // There are 10 users in the database
+        $this->assertSame(
+            10,
+            count($users)
+        );
+
         $this->databaseTool->setPurgeMode(ORMPurger::PURGE_MODE_TRUNCATE);
 
+        // Load fixtures with append = true
         $fixtures = $this->databaseTool->loadAliceFixture([
             '@AcmeBundle/DataFixtures/ORM/user.yml',
         ], true);
@@ -385,7 +397,16 @@ public function testLoadFixturesFilesWithPurgeModeTruncate(): void
             $fixtures
         );
 
-        $id = 1;
+        $users = $this->userRepository->findAll();
+
+        // There are only 10 users in the database
+        $this->assertSame(
+            10,
+            count($users)
+        );
+
+        // Auto-increment hasn't been altered, so ids start from 11
+        $id = 11;
         /** @var User $user */
         foreach ($fixtures as $user) {
             $this->assertSame($id++, $user->getId());